How to create this specific VFX ? (Railgun "muzzle flash/plume" from The Expanse series)


I have watched The Expanse and I really liked the VFX for the railguns and I would like to recreate something like this using the default particle system:



It looks better in the video (at ~0:30)

The material looks like some kind of gas or plasma.

I am a bit confused with the particle system and I don’t really know where to start. How should I proceed ?
Thank you.

check trail renderer. for the rest it’s code or art, with your own polygons.

start with the beginning. noone can teach you within an answer, there are youtube tutos